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Exam 1: Biology: The Science of Life

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Question 31

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Which of the following is NOT true about biodiversity?

A) Biodiversity is defined as variation in life on Earth.
B) Beetles have the highest biodiversity of all animals because there are more species of beetle than any other animal.
C) Biodiversity is one of the most significant bioethical issues that we face today.
D) As extinction rates increase, biodiversity increases.
E) The biodiversity that we have on Earth is the result of billions of years of evolution.

F) A) and B)
G) B) and E)

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Question 32

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Geese are known to use the magnetic field of the Earth in navigating their twice yearly migrations.This is an example of which characteristic of life?

A) maintaining homeostasis
B) reproduction and development
C) interacting with the environment
D) energy regulation
E) organization

F) D) and E)
G) A) and B)

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Question 33

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Kevin is studying predator-prey interactions.One day he notices a spider eating a cricket caught in its web.Later that day,a bird eats the spider.Based on the organisms involved in this study,what level of organization is he studying?

Didinium are carnivorous protista,that prey on other,slower moving protista.A student is studying Didinium feeding rates after 1,3,and 5 days of food deprivation.How should she classify the organism she is studying?

Kevin is studying predator-prey interactions.One day he notices a spider eating a cricket caught in its web.Later that day,a bird eats the spider.How many consumers are there is this scenario?4-25-2013

The beaks of birds are well suited to the type of food they eat.This result arises from

Martin keeps a worm bin in his basement because they need cooler temperatures to survive.He feeds them about 1 pound of kitchen scraps each week.One summer the temperatures rose above the optimal temperature for the red worms (~ 85 ^$\circ$ F) and many in his colony died.However,those that survive continued to reproduce and within 6 months his colony was again thriving.The next summer,unusually warm temperatures again cause the basement temperatures to rise above 85 ^$\circ$ F for 2 days in a row.Surprisingly,Martin noticed that only a small portion of the worm colony died.What is the best explanation for this?

After spending an hour working outside in the hot,sunny weather,a person typically perspires and will need to drink water.This is part of

All of the following are true with respect to DNA except

Which of the following correctly lists the classification categories from least to most inclusive?

Kevin is studying predator-prey interactions.One day he notices a spider eating a cricket caught in its web.Later that day,a bird eats the spider.How many producers are there is this scenario?-13

Populations of amphibians,including frogs and toads,have been plagued by disease and high rates of deformity.A recent study investigated whether problems among the populations have arisen due to poisons from chemicals associated with agriculture.Biologists from the University of Florida collected local adult cane toads (Bufo marinus) from more than 20 different locations.Toads were collected from areas close to agriculture; both large-scale and small-scale farms as well as from suburbs.At collection sites where 50-97% of the adjacent land was farmed,males showed high levels of feminization.Feminized male toads were similar in color to females and had lower levels of testosterone and often also deformed gonads.These changes can lead to sterile males or changes in behavior that prevent mating from occurring.Based on this study,what is/are the test group(s) ?

Richard is an avid gardener who spends a lot of time caring for the plants in his garden.To minimize damage from pests from his garden,Richard uses a pesticide spray.At first the spray is very effective and kills off most of the insects that he sees on his vegetable plants.However,after a few years of using the same pesticide he notices that some insects are surviving and continuing to eat his plants.The constant use of pesticides by Richard has led to genetic changes in the population over many generations.This is an example of

A scientist discovers a new application for a common medical procedure that involves taking tissues from one patient and placing them into another patient.The procedure always results in a full recovery for the patient receiving the tissue but results in long-term disability for the donor 10% of the time.According to bioethics,making the decision as to whether this procedure should be allowed in this country should be the responsibility of

Prokaryotes belong to ________

Which of the following is NOT true about ecosystems?

Based on the evolutionary tree of the three domains,which of the following is true?

Populations of amphibians,including frogs and toads,have been plagued by disease and high rates of deformity.A recent study investigated whether problems among the populations have arisen due to poisons from chemicals associated with agriculture.Biologists from the University of Florida collected local adult cane toads (Bufo marinus) from more than 20 different locations.Toads were collected from areas close to agriculture; both large-scale and small-scale farms as well as from suburbs.At collection sites where 50-97% of the adjacent land was farmed,males showed high levels of feminization.Feminized male toads were similar in color to females and had lower levels of testosterone and often also deformed gonads.These changes can lead to sterile males or changes in behavior that prevent mating from occurring.At the end of their study,scientists stated that they had supported their theory that agricultural chemical cause deformities.

All the chemical reactions that occur in a cell are called

The smallest unit of life is a(n)